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Old 1st September 2003   #1
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Polarity switch

I have a roland keyboard with a sustain pedal that works backwards. Can anyone direct me to a site that has a schematic to install a polarity switch?
Thanks,
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Old 1st September 2003   #2
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It is possible that the switch in this pedal has options for NC and NO.
Normaly Closed , Normaly Open.
Perhaps one of the wires can be moved to the other end of the switch.

I'm guessing so check the facts before doing anything.
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Old 1st September 2003   #3
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sounds like an old joke we used to play on our keyboardist...just before a show we'd switch the polarity internally in his keyboard's settings. ha, ha, ha.

check your keyboard's settings before switching any wires.
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Old 1st September 2003   #4
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what roland keyboard? As mike pointed out, most all keyboards igve you the option to change the polaritygenerally this is under "system" or "global" menus
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Old 1st September 2003   #5
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Thanks for the replies. I'm usisng a Roland xp-10. Unfortunately there is no mention of a polarity switch internally, in the manual. Of course I'm not sure what language this manual was written in.
I know most units ( even on my old Alesis D4) determine which polarity on start up or have the capabilities to change polarity. Roland is notorious for making things difficult to interface with non-Roland products. I remember buying a thirty dollar 2 prong power cable for my D-50 because Roland was the last company to implement the 3 prong universal cables
I'm using an ensoniq sustain pedal (momentary switch) that needs a polarity switch, which was given to me by a Roland RD-100 (no internal polarity switch either) user. I've already reversed the two cables with no luck. I'm just too cheap to go buy the proper pedal if I don't have to.
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Old 1st September 2003   #6
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Quote:
Originally posted by tats_dragon

I've already reversed the two cables with no luck. I'm just too cheap to go buy the proper pedal if I don't have to.
No not just reverse the cables but move one of the cables to the opposite contact.

The switch I am thinking of will have three contacts.
1/ common contact
2/ NC - normally closed
3/ NO - normally open

If the switch only have 2 contacts then it might be possible to replace just the switch into the same hole.
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